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Karaf started in 0s. Bundle stats: 20 active, 20 total
Exception in thread "JMX Connector Thread [service:jmx:rmi://127.0.0.1:44444/jndi/rmi://127.0.0.1:1099/karaf-root]" java.lang.RuntimeException: Could not start JMX connector server
	at org.apache.karaf.management.ConnectorServerFactory.lambda$init$0(ConnectorServerFactory.java:331)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.io.IOException: The server has been stopped.
	at java.management.rmi/javax.management.remote.rmi.RMIConnectorServer.start(RMIConnectorServer.java:400)
	at org.apache.karaf.management.ConnectorServerFactory.lambda$init$0(ConnectorServerFactory.java:315)
	... 1 more
Exception in thread "ofppool-28" java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1229)
	at org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics.getConnectionEvent(SessionStatistics.java:33)
	at org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics.countEvent(SessionStatistics.java:27)
	at org.opendaylight.openflowplugin.impl.connection.ConnectionContextImpl.disconnectDevice(ConnectionContextImpl.java:149)
	at org.opendaylight.openflowplugin.impl.connection.ConnectionContextImpl.closeConnection(ConnectionContextImpl.java:113)
	at org.opendaylight.openflowplugin.impl.connection.listener.SystemNotificationsListenerImpl.executeOnSwitchIdleEvent(SystemNotificationsListenerImpl.java:136)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)